Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

On 12/6/07 8:06 AM, "Shipman, Galen M." wrote: >>> >>> Do we really need a complete node map? A far as I can tell, it looks >>> like the MPI layer only needs a list of local processes. So maybe it >>> would be better to forget about the node ids at the mpi layer and just

Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

On 12/6/07 8:09 AM, "Shipman, Galen M." wrote: > Sorry, to be clear that should have been: > >> One option is for the RTE to just pass in an enviro variable with a >> comma-separated list of your local ranks, but that creates a problem down >> the road when trying to

Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

Sorry, to be clear that should have been: > One option is for the RTE to just pass in an enviro variable with a > comma-separated list of your local ranks, but that creates a problem down > the road when trying to integrate tighter with systems like SLURM where the > procs would get mass-launched

Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

>> >> Do we really need a complete node map? A far as I can tell, it looks >> like the MPI layer only needs a list of local processes. So maybe it >> would be better to forget about the node ids at the mpi layer and just >> return the local procs. > > I agree, though I don't think we want a

Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

On 12/5/07 8:48 AM, "Tim Prins" wrote: > Well, I think it is pretty obvious that I am a fan of a attribute system :) > > For completeness, I will point out that we also exchange architecture > and hostname info in the modex. True - except we should note that hostname

Re: [OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

Well, I think it is pretty obvious that I am a fan of a attribute system :) For completeness, I will point out that we also exchange architecture and hostname info in the modex. Do we really need a complete node map? A far as I can tell, it looks like the MPI layer only needs a list of local

[OMPI devel] RTE Issue IV: RTE/MPI relative modex responsibilities

IV. RTE/MPI relative modex responsibilities The modex operation conducted during MPI_Init currently involves the exchange of two critical pieces of information: 1. the location (i.e., node) of each process in my job so I can determine who shares a node with me. This is subsequently used by the